Return purchase order

We are implementing D365.

Occasionally we need to return certain purchase order lines to the vendor (product quality not good etc.).
When we have a "return PO " we want to maintain, for our records and reporting a link between the original purchase order and the PO returning these same products.

What is the best way to keep a link between the PO and the return?

I am surprised that something like this might be a customization in Dynamics.